LM124D

Overview

The LM124D is a quad low-power operational amplifier manufactured by STMicroelectronics, housed in a 14-SOIC surface-mount package. It features four independent high-gain amplifiers with internal frequency compensation. The device supports single supply voltages from 3 V to 30 V or dual supplies from ±1.5 V to ±15 V. Key electrical parameters include a gain-bandwidth product of 1.3 MHz, a slew rate of 400 mV/µs, and an input offset voltage of 5 mV. The input bias current is 100 nA, and the common-mode rejection ratio is 80 dB. Operating temperature ranges from -55 °C to +125 °C.

Feature Summary

• Quad architecture with four independent high-gain operational amplifiers
• Internal frequency compensation for stability
• Input common-mode voltage range includes ground potential
• Low power supply current drain independent of supply voltage magnitude

Applications

• Sensor signal conditioning
• DC gain modules
• Transducer signal conditioning
• Active filters

Procurement Notes

Verify the specific suffix 'D' corresponds to the SOIC-14 package variant when sourcing. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the ordering part number matches the required temperature grade and packaging format for production requirements.

Selection Notes

Select this component for applications requiring low power consumption with wide single-supply operation. The inclusion of ground in the input common-mode range facilitates direct interfacing with sensors. Verify that the 1.3 MHz bandwidth and 400 mV/µs slew rate meet the dynamic signal requirements of the target circuit design.

Part Context

This device belongs to the LM124/LM224x/LM324x family of quad operational amplifiers. The LM124 series represents the military-grade temperature range version, offering extended reliability compared to commercial variants. The 'D' suffix specifically denotes the plastic small-outline (SOIC) surface-mount package configuration.

Replacement Considerations

LM124DT serves as a reel-packaged alternative within the same STMicroelectronics portfolio.